A new service called PDF TO MP3 enables users to transform PDF documents into audiobooks by tapping into their existing AI subscriptions. The tool integrates with OpenAI’s API and Google’s speech services, allowing document processing and audio generation through a unified workflow.

According to the service description, users can connect their AI subscription through a plugin system. The setup requires three main steps: first, users add an MCP server in their AI client’s settings, then authenticate and connect their PDF TO MP3 account. Next, they add their speech API key to enable audio generation. Finally, they attach a PDF document and request the conversion through their AI chat interface.
The service separates billing responsibilities between subscription usage and API charges. Document processing leverages the user’s existing subscription, which they already pay for regardless. Speech generation, by contrast, is billed separately by either OpenAI or Google based on actual usage.
The tool positions itself as a way to repurpose existing AI infrastructure. Rather than paying for a dedicated audiobook creation service, users can utilize subscriptions they maintain for other purposes. This approach appeals to those already paying for OpenAI or similar services who want to extract additional value from their investments.
The service launched on Product Hunt’s “Show HN” forum, suggesting it was built by independent developers rather than a major corporation. The setup process assumes familiarity with API keys, authentication flows, and AI client configuration, indicating it targets technical users over general consumers.
Users have the option to connect only their API key if they prefer not to use their main subscription for document processing. Pricing specifics for speech generation follow OpenAI and Google’s standard usage-based billing models, though exact rates are not detailed in the available information.
Key facts
- The tool converts PDFs into audiobooks using existing OpenAI or Google subscriptions
- Document processing uses the user’s existing subscription already paid for
- Speech generation is billed separately by OpenAI or Google based on usage
- Setup requires connecting an MCP server, authenticating, and adding a speech API key
- The service targets users with technical knowledge of APIs and AI integrations
